}

  public static CharSourceFactory fileCharSourceFactory() {
    return new FileCharSourceFactory();
  }

  public static CharSinkFactory fileCharSinkFactory() {
    return new FileCharSinkFactory(null);
  }

  public static CharSinkFactory appendingFileCharSinkFactory() {
    String initialString = IoTestCase.ASCII + IoTestCase.I18N;
    return new FileCharSinkFactory(initialString);
  }

    byte[] bytes = string.getBytes(UTF_8);
    TestSuite suite = suiteForBytes(name, factory, desc, bytes);
    CharSinkFactory charSinkFactory = SourceSinkFactories.asCharSinkFactory(factory);
    suite.addTest(
        CharSinkTester.suiteForString(
            name + ".asCharSink[Charset]", charSinkFactory, string, desc));
    return suite;
  }

  private static TestSuite suiteForBytes(

    byte[] bytes = string.getBytes(UTF_8);
    TestSuite suite = suiteForBytes(name, factory, desc, bytes);
    CharSinkFactory charSinkFactory = SourceSinkFactories.asCharSinkFactory(factory);
    suite.addTest(
        CharSinkTester.suiteForString(
            name + ".asCharSink[Charset]", charSinkFactory, string, desc));
    return suite;
  }

  private static TestSuite suiteForBytes(